Bump placebo from 0.9.0 to 0.10.0 (#1173)

Author: dependabot[bot]

requirements/requirements_dev.txt

@@ -8,7 +8,7 @@ flake8-bandit==2.1.2
 flake8-bugbear==21.11.29
 hypothesis==6.8.9
 invoke==1.6.0
-placebo==0.9.0
+placebo==0.10.0
 pre-commit==2.16.0
 pylint==2.7.4
 pytest==6.2.5